• Title/Summary/Keyword: Speech Feedback

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Remote Articulation Training System for the Deafs (청각장애자를 위한 원격조음훈련시스템의 개발)

  • 이재혁;유선국;박상희
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.7 no.1
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    • pp.43-49
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    • 1996
  • In this study, remote articulation training system which connects the hearing disabled trainee and the speech therapist via B-ISDN is introduced. The hearing disabled does not have the hearing feedback of his own pronuciation, and the chance of watching his speech organs movement trajectory will offer him the self-training of articulation. So the system has two purposes of self articulation training and trainer's on-line checking in remote place. We estimate the vocal tract articultory movements from the speech signal using inverse modelling and display the movement trajectoy on the sideview of human face graphically. The trajectories of trainees articulation is displayed along with the reference trajectories, so the trainee can control his articulating to make the two trajectories overlapped. For on-line communication and ckecking training record the system has the function of video conferencing and tranferring articulatory data.

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The Effect of Auditory Feedback on Fundamental Frequencies: The Comparision Among Children with Cochlear Implantation, With Hearing Aids, and With Normal Hearing (청각적 피드백이 기본주파수에 주는 영향: 와우이식 아동, 보청기 사용아동, 및 건청아동 간의 비교)

  • Yoon Misun;Kim Chongsun
    • Proceedings of the KSPS conference
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    • 2003.05a
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    • pp.105-108
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    • 2003
  • The purpose of this paper was to evaluate the effect of auditory feedback on fundamental frequencies in prelingulally deaf children. Participants totaled three groups of sixty children: deaf children with cochlear implantation(CI), deaf children with hearing aids (HA), and children with normal hearing(NH). Fundamental frequencies were measured during sustained phonation of /a/. There were statistically significant differences of fundamental frequencies across the groups(p<.01). In post hoc analysis, HA and NH group showed statistically significant differences, but CI group didn't. In correlation analysis between Fo and the chronological age, there were significant negative tendencies in CI and NH group, but not in HA group. The characteristics of fundamental frequencies in CI group were found similar to NH group than HA group in this study. This could be understood as the effect of relatively sufficient auditory feedback after cochlear implantation.

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Development of Joystick & Speech Recognition Moving Machine Control System (조이스틱 및 음성인식 겸용 이동기제어시스템 개발)

  • Lee, Sang-Bae;Kang, Sung-In
    • Journal of the Korean Institute of Intelligent Systems
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    • v.17 no.1
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    • pp.52-57
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    • 2007
  • This paper presents the design of intelligent moving machine control system using a real time speech recognition. The proposed moving machine control system is composed of four separated module, which are main control module, speech recognition module, servo motor driving module and sensor module. In main control module with microprocessor(80C196KC), one part of the artificial intelligences, fuzzy logic, was applied to the proposed intelligent control system. In order to improve the non-linear characteristic which depend on an user's weight and variable environment, encoder attached to the servo motors was used for feedback control. The proposed system is tested using 9 words lot control of the mobile robot, and the performance of a mobile robot using voice and joystick command is also evaluated.

Applications of haptic feedbacks in medicine (의료분야에서의 햅틱 피드백 응용)

  • Quy, Pham Sy;Seo, An-Na;Kim, Hyung-Seok;Kim, Jee-In
    • 한국HCI학회:학술대회논문집
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    • 2009.02a
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    • pp.203-213
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    • 2009
  • Medicine is one of great application fields where Virtual Reality (VR) technologies have been successfully utilized. The VR technologies in medicine bring together an interdisciplinary community of computer scientists and engineers, physicians and surgeon, medical educator and students, military medical specialists, and biomedical futurists. The primary feedback of a VR system has been visual feedback. The complex geometry for graphic objects and utilizing hardware acceleration can be incorporated with in order to produce realistic virtual environments. To enhance human-computer interaction (HCI), in term of immersive experiences perceived by users, haptic, speech, olfactory and other non-traditional interfaces should also be exploited. Among those, hapic feedback has been tightly coupled with visual feedback. The combination of the two sensory feedbacks can give users more immersive, realistic and perceptive VR environments. Haptic feedback has been studied over decades and many haptic based VR systems have been developed. This paper focuses on haptic feedback in term of its medical usages. It presents a survey of haptic feedback techniques with their applications in medicine.

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Acoustic Masking Effect That Can Be Occurred by Speech Contrast Enhancement in Hearing Aids (보청기에서 음성 대비 강조에 의해 발생할 수 있는 마스킹 현상)

  • Jeon, Y.Y.;Yang, D.G.;Bang, D.H.;Kil, S.K.;Lee, S.M.
    • Journal of rehabilitation welfare engineering & assistive technology
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    • v.1 no.1
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    • pp.21-28
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    • 2007
  • In most of hearing aids, amplification algorithms are used to compensate hearing loss, noise and feedback reduction algorithms are used and to increase the perception of speeches contrast enhancement algorithms are used. However, acoustic masking effect is occurred between formants if contrast is enhanced excessively. To confirm the masking effect in speeches, the experiment are composed of 6 tests; test pure tone test, speech reception test, word recognition test, pure tone masking test, formant pure tone masking test and speech masking test, and for objective evaluation, LLR is introduced. As a result of normal hearing subjects and hearing impaired subjects, more making is occurred in hearing impaired subjects than normal hearing subjects when using pure tone, and in the speech masking test, speech reception is also lower in hearing impaired subjects than in normal hearing subjects. This means that acoustic masking effect rather than distortion influences speech perception. So it is required to check the characteristics of masking effect before wearing a hearing aid and to apply this characteristics to fitting curve.

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A Study of Acoustic Masking Effect from Formant Enhancement in Digital Hearing Aid (디지털 보청기에서의 포먼트 강조에 의한 마스킹 효과 연구)

  • Jeon, Yu-Yong;Kil, Se-Kee;Yoon, Kwang-Sub;Lee, Sang-Min
    • Journal of the Institute of Electronics Engineers of Korea SC
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    • v.45 no.5
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    • pp.13-20
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    • 2008
  • Although digital hearing aid algorithms have been developed to compensate hearing loss and to help hearing impaired people to communicate with others, digital hearing aid user still complain about difficulty of hearing the speech. The reason could be the quality of speech through digital hearing aid is insufficient to understand the speech caused by feedback, residual noise and etc. And another thing is masking effect among formants that makes sound quality low. In this study, we measured the masking characteristics of normal listeners and hearing impaired listeners having presbyacusis to confirm masking effect in speech itself. The experiment is composed of 5 tests; pure tone test, speech reception threshold (SRT) test, word recognition score (WRS) test, puretone masking test and speech masking test. In speech masking test, there are 25 speeches in each speech set. And log likelihood ratio (LLR) is introduced to evaluate the distortion of each speech objectively. As a result, the speech perception became lower by increasing the quantity of formant enhancement. And each enhanced speech in a speech set has statistically similar LLR, however speech perception is not. It means that acoustic masking effect rather than distortion influences speech perception. In actuality, according to the result of frequency analysis of the speech that people can not answer correctly, level difference between first formant and second formant is about 35dB, and it is similar to result of pure tone masking test(normal hearing subject:36.36dB, hearing impaired subject:32.86dB). Characteristics of masking effect is not similar between normal listeners and hearing impaired listeners. So it is required to check the characteristics of masking effect before wearing a hearing aid and to apply this characteristics to fitting.

Implementation of Adaptive Feedback Cancellation Algorithm for Multichannel Digital Hearing Aid (다채널 디지털 보청기에 적용 가능한 Adaptive Feedback Cancellation 알고리즘 구현)

  • Jeon, Shin-Hyuk;Ji, You-Na;Park, Young-Cheol
    • The Journal of Korea Institute of Information, Electronics, and Communication Technology
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    • v.10 no.1
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    • pp.102-110
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    • 2017
  • In this paper, we have implemented an real-time adaptive feedback cancellation(AFC) algorithm that can be applied to multi-channel digital hearing aid. Multichannel digital hearing aid typically use the FFT filterbank based Wide Dynamic Range Compression(WDRC) algorithm to compensate for hearing loss. The implemented real-time acoustic feedback cancellation algorithm has one integrated structure using the same FFT filter bank with WDRC, which can be beneficial in terms of computation affecting the hearing aid battery life. In addition, when the AFC fails to operate due to nonlinear input and output, the reduction gain is applied to improve robustness in practical environment. The implemented algorithm can be further improved by adding various signal processing algorithm such as speech enhancement.

Speaking Education Plan for University Students by Using the Method of Peer and Self Evaluation Feedback (동료 및 자기 평가 피드백을 통한 대학생 말하기 교육 방안)

  • Choi, Yun-Hee
    • The Journal of the Korea Contents Association
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    • v.20 no.1
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    • pp.573-580
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    • 2020
  • The purpose of this study was to explore and to suggest the effective teaching methods for university students to improve their speaking abilities through peer assessment-feedback and self assessment-feedback based presentation and debate class. The objects and content of the study were the students who took a class "Reading and Communication" of H university, and here examine closely the speaking activities and their effects during the integrated activities of 'reading, speaking and writing'. In speaking education peer and self assessment feedback is to form an emotional consensus among the students and encourage active participation, and enable self-discovery and communication learning to students. As a result of the study, it was found that the variety speaking practice had a very positive effect on the attitude of speaking and the psychological aspect, and it was confirmed that the evaluation and feedback activities had a meaningful learning effect on the students. Effective speech education and guidance measures should be continuously studied and developed.

Speech Therapy for Functional Articulation Disorders Using the Dynamic Palatogram - improvement of lateralized /ㅅ/- (Dynamic Palatogram을 이용한 기능적 구음장애의 언어치료가 음성 지표에 미치는 영향)

  • 박혜숙;최홍식;김광문;신미성
    • Journal of the Korean Society of Laryngology, Phoniatrics and Logopedics
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    • v.5 no.1
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    • pp.29-37
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    • 1994
  • We report the clinical treatment experience of a case with severe lateralization articulation disorder especially in /ㅅ/, who was treated with using a dynamic palatogram. The patient was 16-year-old male patient and he was taken several attempts of traditional speech therapy without improvement The authors tried to treat him with newly designed dynamic palatogram for two period with good results. We are going to review brief clinical experience with the patient and discuss the effectiveness and indications of the dynamic palatogram. In this study, we can summarize the effect of treatment as follows; Lateralization of the /ㅅ/ was improved markedly with using the dynamic palatogram, and we thought the improvement was achieved mainly by visual feedback control.

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Design and Implementation of a Usability Testing Tool for User-oriented Design of Command-and-Control Voice User Interfaces (명령 제어 음성 인터페이스 사용자 중심 설계를 위한 사용성 평가도구의 설계 및 구현)

  • Lee, Myeong-Ji;Hong, Ki-Hyung
    • Phonetics and Speech Sciences
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    • v.3 no.2
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    • pp.79-87
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    • 2011
  • Recently, usability has become very important in voice user interface systems. In this paper, we have designed and implemented a wizard-of-oz (WOZ) usability testing tool for command-and-control voice user interfaces. We have proposed the VUIDML (Voice User Interface Design Markup Language) to design the usability test scenario of command-and-control voice interfaces in the early design stages. For highly satisfactory voice user interfaces, we have to select highly preferred voice commands and prompts. In VUIDML, we can specify possible prompt candidates. The WOZ usability testing tool can also be used to collect user-preferred voice commands and feedback from real users.

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